/* Multi-process control for GDB, the GNU debugger.
- Copyright (C) 2008-2017 Free Software Foundation, Inc.
+ Copyright (C) 2008-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcmd.h"
#include "gdbthread.h"
#include "ui-out.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbcore.h"
#include "symfile.h"
-#include "environ.h"
+#include "gdbsupport/environ.h"
#include "cli/cli-utils.h"
#include "continuations.h"
#include "arch-utils.h"
#include "readline/tilde.h"
#include "progspace-and-thread.h"
-void _initialize_inferiors (void);
-
/* Keep a registry of per-inferior data-pointers required by other GDB
modules. */
struct inferior *inferior_list = NULL;
static int highest_inferior_num;
-/* Print notices on inferior events (attach, detach, etc.), set with
- `set print inferior-events'. */
-static int print_inferior_events = 0;
+/* See inferior.h. */
+bool print_inferior_events = true;
/* The Current Inferior. This is a strong reference. I.e., whenever
an inferior is the current inferior, its refcount is
current_inferior_ = inf;
}
+private_inferior::~private_inferior () = default;
+
inferior::~inferior ()
{
inferior *inf = this;
inferior_free_data (inf);
xfree (inf->args);
xfree (inf->terminal);
- free_environ (inf->environment);
target_desc_info_free (inf->tdesc_info);
- xfree (inf->priv);
}
inferior::inferior (int pid_)
: num (++highest_inferior_num),
pid (pid_),
- environment (make_environ ()),
+ environment (gdb_environ::from_host_environ ()),
registry_data ()
{
- init_environ (this->environment);
inferior_alloc_data (this);
}
last->next = inf;
}
- observer_notify_inferior_added (inf);
+ gdb::observers::inferior_added.notify (inf);
if (pid != 0)
inferior_appeared (inf, pid);
struct inferior *inf = add_inferior_silent (pid);
if (print_inferior_events)
- printf_unfiltered (_("[New inferior %d]\n"), pid);
-
- return inf;
-}
-
-struct delete_thread_of_inferior_arg
-{
- int pid;
- int silent;
-};
-
-static int
-delete_thread_of_inferior (struct thread_info *tp, void *data)
-{
- struct delete_thread_of_inferior_arg *arg
- = (struct delete_thread_of_inferior_arg *) data;
-
- if (ptid_get_pid (tp->ptid) == arg->pid)
{
- if (arg->silent)
- delete_thread_silent (tp->ptid);
+ if (pid != 0)
+ printf_unfiltered (_("[New inferior %d (%s)]\n"),
+ inf->num,
+ target_pid_to_str (ptid_t (pid)).c_str ());
else
- delete_thread (tp->ptid);
+ printf_unfiltered (_("[New inferior %d]\n"), inf->num);
}
- return 0;
+ return inf;
}
void
delete_inferior (struct inferior *todel)
{
struct inferior *inf, *infprev;
- struct delete_thread_of_inferior_arg arg;
infprev = NULL;
if (!inf)
return;
- arg.pid = inf->pid;
- arg.silent = 1;
-
- iterate_over_threads (delete_thread_of_inferior, &arg);
+ for (thread_info *tp : inf->threads_safe ())
+ delete_thread_silent (tp);
if (infprev)
infprev->next = inf->next;
else
inferior_list = inf->next;
- observer_notify_inferior_removed (inf);
+ gdb::observers::inferior_removed.notify (inf);
/* If this program space is rendered useless, remove it. */
if (program_space_empty_p (inf->pspace))
exit_inferior_1 (struct inferior *inftoex, int silent)
{
struct inferior *inf;
- struct delete_thread_of_inferior_arg arg;
for (inf = inferior_list; inf; inf = inf->next)
if (inf == inftoex)
if (!inf)
return;
- arg.pid = inf->pid;
- arg.silent = silent;
-
- iterate_over_threads (delete_thread_of_inferior, &arg);
+ for (thread_info *tp : inf->threads_safe ())
+ {
+ if (silent)
+ delete_thread_silent (tp);
+ else
+ delete_thread (tp);
+ }
- observer_notify_inferior_exit (inf);
+ gdb::observers::inferior_exit.notify (inf);
inf->pid = 0;
- inf->fake_pid_p = 0;
- xfree (inf->priv);
+ inf->fake_pid_p = false;
inf->priv = NULL;
if (inf->vfork_parent != NULL)
}
inf->pending_detach = 0;
+ /* Reset it. */
+ inf->control = inferior_control_state (NO_STOP_QUIETLY);
+
+ /* Clear the register cache and the frame cache. */
+ registers_changed ();
+ reinit_frame_cache ();
}
void
-exit_inferior (int pid)
+exit_inferior (inferior *inf)
{
- struct inferior *inf = find_inferior_pid (pid);
-
exit_inferior_1 (inf, 0);
-
- if (print_inferior_events)
- printf_unfiltered (_("[Inferior %d exited]\n"), pid);
}
void
-exit_inferior_silent (int pid)
+exit_inferior_silent (inferior *inf)
{
- struct inferior *inf = find_inferior_pid (pid);
-
exit_inferior_1 (inf, 1);
}
-void
-exit_inferior_num_silent (int num)
-{
- struct inferior *inf = find_inferior_id (num);
-
- exit_inferior_1 (inf, 1);
-}
+/* See inferior.h. */
void
-detach_inferior (int pid)
+detach_inferior (inferior *inf)
{
- struct inferior *inf = find_inferior_pid (pid);
+ /* Save the pid, since exit_inferior_1 will reset it. */
+ int pid = inf->pid;
exit_inferior_1 (inf, 0);
if (print_inferior_events)
- printf_unfiltered (_("[Inferior %d detached]\n"), pid);
+ printf_unfiltered (_("[Inferior %d (%s) detached]\n"),
+ inf->num,
+ target_pid_to_str (ptid_t (pid)).c_str ());
}
void
inferior_appeared (struct inferior *inf, int pid)
{
+ /* If this is the first inferior with threads, reset the global
+ thread id. */
+ delete_exited_threads ();
+ if (!any_thread_p ())
+ init_thread_list ();
+
inf->pid = pid;
inf->has_exit_code = 0;
inf->exit_code = 0;
- observer_notify_inferior_appeared (inf);
+ gdb::observers::inferior_appeared.notify (inf);
}
void
discard_all_inferiors (void)
{
- struct inferior *inf;
-
- for (inf = inferior_list; inf; inf = inf->next)
- {
- if (inf->pid != 0)
- exit_inferior_silent (inf->pid);
- }
+ for (inferior *inf : all_non_exited_inferiors ())
+ exit_inferior_silent (inf);
}
struct inferior *
find_inferior_id (int num)
{
- struct inferior *inf;
-
- for (inf = inferior_list; inf; inf = inf->next)
+ for (inferior *inf : all_inferiors ())
if (inf->num == num)
return inf;
struct inferior *
find_inferior_pid (int pid)
{
- struct inferior *inf;
-
/* Looking for inferior pid == 0 is always wrong, and indicative of
a bug somewhere else. There may be more than one with pid == 0,
for instance. */
gdb_assert (pid != 0);
- for (inf = inferior_list; inf; inf = inf->next)
+ for (inferior *inf : all_inferiors ())
if (inf->pid == pid)
return inf;
struct inferior *
find_inferior_ptid (ptid_t ptid)
{
- return find_inferior_pid (ptid_get_pid (ptid));
+ return find_inferior_pid (ptid.pid ());
}
/* See inferior.h. */
struct inferior *
find_inferior_for_program_space (struct program_space *pspace)
{
- struct inferior *inf = current_inferior ();
+ struct inferior *cur_inf = current_inferior ();
- if (inf->pspace == pspace)
- return inf;
+ if (cur_inf->pspace == pspace)
+ return cur_inf;
- for (inf = inferior_list; inf != NULL; inf = inf->next)
- {
- if (inf->pspace == pspace)
- return inf;
- }
+ for (inferior *inf : all_inferiors ())
+ if (inf->pspace == pspace)
+ return inf;
return NULL;
}
iterate_over_inferiors (int (*callback) (struct inferior *, void *),
void *data)
{
- struct inferior *inf, *infnext;
-
- for (inf = inferior_list; inf; inf = infnext)
- {
- infnext = inf->next;
- if ((*callback) (inf, data))
- return inf;
- }
+ for (inferior *inf : all_inferiors_safe ())
+ if ((*callback) (inf, data))
+ return inf;
return NULL;
}
-int
-valid_gdb_inferior_id (int num)
-{
- struct inferior *inf;
-
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->num == num)
- return 1;
-
- return 0;
-}
-
-int
-pid_to_gdb_inferior_id (int pid)
-{
- struct inferior *inf;
-
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->pid == pid)
- return inf->num;
-
- return 0;
-}
-
-int
-gdb_inferior_id_to_pid (int num)
-{
- struct inferior *inferior = find_inferior_id (num);
- if (inferior)
- return inferior->pid;
- else
- return -1;
-}
-
-int
-in_inferior_list (int pid)
-{
- struct inferior *inf;
-
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->pid == pid)
- return 1;
-
- return 0;
-}
-
int
have_inferiors (void)
{
- struct inferior *inf;
-
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->pid != 0)
- return 1;
+ for (inferior *inf ATTRIBUTE_UNUSED : all_non_exited_inferiors ())
+ return 1;
return 0;
}
int
number_of_live_inferiors (void)
{
- struct inferior *inf;
int num_inf = 0;
- for (inf = inferior_list; inf; inf = inf->next)
- if (inf->pid != 0)
- {
- struct thread_info *tp;
-
- ALL_NON_EXITED_THREADS (tp)
- if (tp && ptid_get_pid (tp->ptid) == inf->pid)
- if (target_has_execution_1 (tp->ptid))
- {
- /* Found a live thread in this inferior, go to the next
- inferior. */
- ++num_inf;
- break;
- }
- }
+ for (inferior *inf : all_non_exited_inferiors ())
+ if (target_has_execution_1 (ptid_t (inf->pid)))
+ for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ())
+ {
+ /* Found a live thread in this inferior, go to the next
+ inferior. */
+ ++num_inf;
+ break;
+ }
return num_inf;
}
void
prune_inferiors (void)
{
- struct inferior *ss, **ss_link;
+ inferior *ss;
ss = inferior_list;
- ss_link = &inferior_list;
while (ss)
{
if (!ss->deletable ()
|| !ss->removable
|| ss->pid != 0)
{
- ss_link = &ss->next;
- ss = *ss_link;
+ ss = ss->next;
continue;
}
- *ss_link = ss->next;
+ inferior *ss_next = ss->next;
delete_inferior (ss);
- ss = *ss_link;
+ ss = ss_next;
}
}
int
number_of_inferiors (void)
{
- struct inferior *inf;
- int count = 0;
-
- for (inf = inferior_list; inf != NULL; inf = inf->next)
- count++;
-
- return count;
+ auto rng = all_inferiors ();
+ return std::distance (rng.begin (), rng.end ());
}
/* Converts an inferior process id to a string. Like
target_pid_to_str, but special cases the null process. */
-static const char *
+static std::string
inferior_pid_to_str (int pid)
{
if (pid != 0)
- return target_pid_to_str (pid_to_ptid (pid));
+ return target_pid_to_str (ptid_t (pid));
else
return _("<null>");
}
filename = _("<noexec>");
uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"),
- inf->num, inferior_pid_to_str (inf->pid), filename);
+ inf->num, inferior_pid_to_str (inf->pid).c_str (), filename);
}
/* Prints the list of inferiors and their details on UIOUT. This is a
printed. */
static void
-print_inferior (struct ui_out *uiout, char *requested_inferiors)
+print_inferior (struct ui_out *uiout, const char *requested_inferiors)
{
- struct inferior *inf;
- struct cleanup *old_chain;
int inf_count = 0;
/* Compute number of inferiors we will print. */
- for (inf = inferior_list; inf; inf = inf->next)
+ for (inferior *inf : all_inferiors ())
{
if (!number_is_in_list (requested_inferiors, inf->num))
continue;
return;
}
- old_chain = make_cleanup_ui_out_table_begin_end (uiout, 4, inf_count,
- "inferiors");
+ ui_out_emit_table table_emitter (uiout, 4, inf_count, "inferiors");
uiout->table_header (1, ui_left, "current", "");
uiout->table_header (4, ui_left, "number", "Num");
uiout->table_header (17, ui_left, "target-id", "Description");
uiout->table_header (17, ui_left, "exec", "Executable");
uiout->table_body ();
- for (inf = inferior_list; inf; inf = inf->next)
+ for (inferior *inf : all_inferiors ())
{
if (!number_is_in_list (requested_inferiors, inf->num))
continue;
else
uiout->field_skip ("current");
- uiout->field_int ("number", inf->num);
+ uiout->field_signed ("number", inf->num);
uiout->field_string ("target-id", inferior_pid_to_str (inf->pid));
if (inf->vfork_parent)
{
uiout->text (_("\n\tis vfork child of inferior "));
- uiout->field_int ("vfork-parent", inf->vfork_parent->num);
+ uiout->field_signed ("vfork-parent", inf->vfork_parent->num);
}
if (inf->vfork_child)
{
uiout->text (_("\n\tis vfork parent of inferior "));
- uiout->field_int ("vfork-child", inf->vfork_child->num);
+ uiout->field_signed ("vfork-child", inf->vfork_child->num);
}
uiout->text ("\n");
}
-
- do_cleanups (old_chain);
}
static void
-detach_inferior_command (char *args, int from_tty)
+detach_inferior_command (const char *args, int from_tty)
{
- struct thread_info *tp;
-
if (!args || !*args)
error (_("Requires argument (inferior id(s) to detach)"));
{
int num = parser.get_number ();
- if (!valid_gdb_inferior_id (num))
+ inferior *inf = find_inferior_id (num);
+ if (inf == NULL)
{
warning (_("Inferior ID %d not known."), num);
continue;
}
- int pid = gdb_inferior_id_to_pid (num);
- if (pid == 0)
+ if (inf->pid == 0)
{
warning (_("Inferior ID %d is not running."), num);
continue;
}
- tp = any_thread_of_process (pid);
- if (!tp)
+ thread_info *tp = any_thread_of_inferior (inf);
+ if (tp == NULL)
{
warning (_("Inferior ID %d has no threads."), num);
continue;
}
- switch_to_thread (tp->ptid);
+ switch_to_thread (tp);
detach_command (NULL, from_tty);
}
}
static void
-kill_inferior_command (char *args, int from_tty)
+kill_inferior_command (const char *args, int from_tty)
{
- struct thread_info *tp;
-
if (!args || !*args)
error (_("Requires argument (inferior id(s) to kill)"));
{
int num = parser.get_number ();
- if (!valid_gdb_inferior_id (num))
+ inferior *inf = find_inferior_id (num);
+ if (inf == NULL)
{
warning (_("Inferior ID %d not known."), num);
continue;
}
- int pid = gdb_inferior_id_to_pid (num);
- if (pid == 0)
+ if (inf->pid == 0)
{
warning (_("Inferior ID %d is not running."), num);
continue;
}
- tp = any_thread_of_process (pid);
- if (!tp)
+ thread_info *tp = any_thread_of_inferior (inf);
+ if (tp == NULL)
{
warning (_("Inferior ID %d has no threads."), num);
continue;
}
- switch_to_thread (tp->ptid);
+ switch_to_thread (tp);
target_kill ();
}
}
static void
-inferior_command (char *args, int from_tty)
+inferior_command (const char *args, int from_tty)
{
struct inferior *inf;
int num;
if (inf->pid != 0)
{
- if (inf->pid != ptid_get_pid (inferior_ptid))
+ if (inf != current_inferior ())
{
- struct thread_info *tp;
-
- tp = any_thread_of_process (inf->pid);
- if (!tp)
+ thread_info *tp = any_thread_of_inferior (inf);
+ if (tp == NULL)
error (_("Inferior has no threads."));
- switch_to_thread (tp->ptid);
+ switch_to_thread (tp);
}
- observer_notify_user_selected_context_changed
+ gdb::observers::user_selected_context_changed.notify
(USER_SELECTED_INFERIOR
| USER_SELECTED_THREAD
| USER_SELECTED_FRAME);
else
{
set_current_inferior (inf);
- switch_to_thread (null_ptid);
+ switch_to_no_thread ();
set_current_program_space (inf->pspace);
- observer_notify_user_selected_context_changed (USER_SELECTED_INFERIOR);
+ gdb::observers::user_selected_context_changed.notify
+ (USER_SELECTED_INFERIOR);
}
}
/* Print information about currently known inferiors. */
static void
-info_inferiors_command (char *args, int from_tty)
+info_inferiors_command (const char *args, int from_tty)
{
print_inferior (current_uiout, args);
}
/* remove-inferior ID */
static void
-remove_inferior_command (char *args, int from_tty)
+remove_inferior_command (const char *args, int from_tty)
{
if (args == NULL || *args == '\0')
error (_("Requires an argument (inferior id(s) to remove)"));
doesn't really return a new address space; otherwise, it
really does. */
aspace = maybe_new_address_space ();
- pspace = add_program_space (aspace);
+ pspace = new program_space (aspace);
inf = add_inferior (0);
inf->pspace = pspace;
inf->aspace = pspace->aspace;
/* add-inferior [-copies N] [-exec FILENAME] */
static void
-add_inferior_command (char *args, int from_tty)
+add_inferior_command (const char *args, int from_tty)
{
int i, copies = 1;
- char *exec = NULL;
- char **argv;
+ gdb::unique_xmalloc_ptr<char> exec;
symfile_add_flags add_flags = 0;
- struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
if (from_tty)
add_flags |= SYMFILE_VERBOSE;
if (args)
{
- argv = gdb_buildargv (args);
- make_cleanup_freeargv (argv);
+ gdb_argv built_argv (args);
- for (; *argv != NULL; argv++)
+ for (char **argv = built_argv.get (); *argv != NULL; argv++)
{
if (**argv == '-')
{
++argv;
if (!*argv)
error (_("No argument to -exec"));
- exec = tilde_expand (*argv);
- make_cleanup (xfree, exec);
+ exec.reset (tilde_expand (*argv));
}
}
else
symbols.q. */
set_current_program_space (inf->pspace);
set_current_inferior (inf);
- switch_to_thread (null_ptid);
+ switch_to_no_thread ();
- exec_file_attach (exec, from_tty);
- symbol_file_add_main (exec, add_flags);
+ exec_file_attach (exec.get (), from_tty);
+ symbol_file_add_main (exec.get (), add_flags);
}
}
-
- do_cleanups (old_chain);
}
/* clone-inferior [-copies N] [ID] */
static void
-clone_inferior_command (char *args, int from_tty)
+clone_inferior_command (const char *args, int from_tty)
{
int i, copies = 1;
- char **argv;
struct inferior *orginf = NULL;
- struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
if (args)
{
- argv = gdb_buildargv (args);
- make_cleanup_freeargv (argv);
+ gdb_argv built_argv (args);
+ char **argv = built_argv.get ();
for (; *argv != NULL; argv++)
{
if (**argv == '-')
doesn't really return a new address space; otherwise, it
really does. */
aspace = maybe_new_address_space ();
- pspace = add_program_space (aspace);
+ pspace = new program_space (aspace);
inf = add_inferior (0);
inf->pspace = pspace;
inf->aspace = pspace->aspace;
printf_filtered (_("Added inferior %d.\n"), inf->num);
set_current_inferior (inf);
- switch_to_thread (null_ptid);
+ switch_to_no_thread ();
clone_program_space (pspace, orginf->pspace);
}
-
- do_cleanups (old_chain);
}
/* Print notices when new inferiors are created and die. */
can only allocate an inferior when all those modules have done
that. Do this after initialize_progspace, due to the
current_program_space reference. */
- current_inferior_ = add_inferior (0);
+ current_inferior_ = add_inferior_silent (0);
current_inferior_->incref ();
current_inferior_->pspace = current_program_space;
current_inferior_->aspace = current_program_space->aspace;
/* The architecture will be initialized shortly, by
initialize_current_architecture. */
- add_info ("inferiors", info_inferiors_command,
- _("IDs of specified inferiors (all inferiors if no argument)."));
+ add_info ("inferiors", info_inferiors_command,
+ _("Print a list of inferiors being managed.\n\
+Usage: info inferiors [ID]...\n\
+If IDs are specified, the list is limited to just those inferiors.\n\
+By default all inferiors are displayed."));
c = add_com ("add-inferior", no_class, add_inferior_command, _("\
Add a new inferior.\n\
-Usage: add-inferior [-copies <N>] [-exec <FILENAME>]\n\
+Usage: add-inferior [-copies N] [-exec FILENAME]\n\
N is the optional number of inferiors to add, default is 1.\n\
FILENAME is the file name of the executable to use\n\
as main program."));
add_com ("clone-inferior", no_class, clone_inferior_command, _("\
Clone inferior ID.\n\
-Usage: clone-inferior [-copies <N>] [ID]\n\
+Usage: clone-inferior [-copies N] [ID]\n\
Add N copies of inferior ID. The new inferior has the same\n\
executable loaded as the copied inferior. If -copies is not specified,\n\
adds 1 copy. If ID is not specified, it is the current inferior\n\
that is cloned."));
add_cmd ("inferiors", class_run, detach_inferior_command, _("\
-Detach from inferior ID (or list of IDS)."),
+Detach from inferior ID (or list of IDS).\n\
+Usage; detach inferiors ID..."),
&detachlist);
add_cmd ("inferiors", class_run, kill_inferior_command, _("\
-Kill inferior ID (or list of IDs)."),
+Kill inferior ID (or list of IDs).\n\
+Usage: kill inferiors ID..."),
&killlist);
add_cmd ("inferior", class_run, inferior_command, _("\
Use this command to switch between inferiors.\n\
+Usage: inferior ID\n\
The new inferior ID must be currently known."),
&cmdlist);
add_setshow_boolean_cmd ("inferior-events", no_class,
&print_inferior_events, _("\
-Set printing of inferior events (e.g., inferior start and exit)."), _("\
-Show printing of inferior events (e.g., inferior start and exit)."), NULL,
+Set printing of inferior events (such as inferior start and exit)."), _("\
+Show printing of inferior events (such as inferior start and exit)."), NULL,
NULL,
show_print_inferior_events,
&setprintlist, &showprintlist);
projects / binutils.git / blobdiff